42718281338 has 8 divisors (see below), whose sum is σ = 64120460340. Its totient is φ = 21344794560.

The previous prime is 42718281337. The next prime is 42718281367. The reversal of 42718281338 is 83318281724.

It can be written as a sum of positive squares in 2 ways, for example, as 42680667649 + 37613689 = 206593^2 + 6133^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 42718281292 and 42718281301.

It is not an unprimeable number, because it can be changed into a prime (42718281337) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7169333 + ... + 7175288.

Almost surely, 2^42718281338 is an apocalyptic number.

42718281338 is a deficient number, since it is larger than the sum of its proper divisors (21402179002).

42718281338 is a wasteful number, since it uses less digits than its factorization.

42718281338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14346112.

The product of its digits is 516096, while the sum is 47.

The spelling of 42718281338 in words is "forty-two billion, seven hundred eighteen million, two hundred eighty-one thousand, three hundred thirty-eight".